TY  - GEN
AU  - Preppernau , Joan
AU  - Cox , Joyce
TI  - Windows 7: step by step
SN  - 9788120341166
U1  - 005.269 
PY  - 2010///
CY  - New Delhi
PB  - PHI Learning
KW  - COMPUTER SCIENCES
KW  - COMPUTER OPERATING SYSTEMS
KW  - WINDOWS 7
KW  - CD
ER  -